Combined typewriting and computing machine



w.1. HAUSMAN. I COMBINED TYPEWRITING AND COMPUTING MACHINE.

APPLICATION FILED IAN- 6, 192].

Patented May 16,'

M-CQMO 0 38 25 04c wtOUmU On nhD no UNITED STATES PATENT OFFICE.

WALTER J. HAUSMAN, on ST. LOUIS, MI

ssonni, Assrsivon T0 unnnnwoon corr- PUTING MACHINE COMPANY,lil'E'iF/"TZORK, N. Y., A CORPORATION' OF NEW YORK.

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Specification of Letters Patent. Patented lay 16 1922 Application filedJanuary 6, 1921. Serial 110.435326. a v

T 0 all whomit may concern:

Be it knownthat I, NAL'rnn Hnosrm q, a citizen of the United States,residing in St. Louis, in the city of St. Louis and State of Missouri,have invented certain new and useful Improvements in Combined Typeritingand Computing Machines, of which the following is a specification.

This invention relates to improvements in combined typewriting and"computing machines of the Underwood-Hanson type, and is shown asapplied to a machine equipped with a plurality of registers, as in thepatent to Hart, No. 1,27O, l11,dated June 25 1918, one of which may beused as a main comput ing register and anothersimply as a provingregister.

It is customary to insert in the machine a ledger-sheet carrying acustomers account and showing the balance in favor oi? the dealer in oneof the columns near the right hand end, headed Balance. 'In order to runthis balance into the computing register, the old balance is copied andtyped in the first column of the ledger-sheet, adjoining the leit-handedge, The old balance is also simultaneously run into the provingregister. There are then typed in theother columns the debits orcredits, which are added or sub tracted in the computing register togive a new balance; but these items do not affect the proving register,which still contains the old balance. The new balance is then typed inthe balance column, and simultaneously subtracted out of the computingregister. The star key may then be operated to type the star, therebyshowing that the computing register stands at zero. patent to Hart, No.1,190,287, dated July 11, 1916.)

In the last column near the right-hand edge, there is adapted to betyped, for proving purposes, the old balance withwhich the dayscomputations were begun, at the same time subtracting said balance outof the proving register. Assume the old balance to be incorrectly typedin the old balance column, and hence incorrectly run intothecomputingand proving registers. If the operator looks into the s old'balance column and types the amount found there, he will subprovingregister. operated and the error becomes apparent.

(See

,vention, therefore, provides a blind or screen for covering up theamount in the oldbalance column, so that it is necessary to go to theoriginal balance column to get the amount. Since the operator is notlikely to make the same error twice in copying from the same amount, adifferent amount will then be typed than that contained in the The starkey cannot be The shutter means comprises a member fixed to the machinein such manner as to become effective when the final right-hand columnof the ledger-sheet is in position to be typed.

Since there is subtracted out of the computing register the exact amountfound therein, the star can be printed even though the computation beganwith an incorrect old balance. In typing the old balance for pro vingpurposes, the amount is read from the balance column and not from theproving register or the old balance column.

Other features and advantages will hereinafter appear.

Inthe accompanying drawings, Figure 1 is an end view showing the1nvention applied to a typewritmg and computing machine, onlythenecessary. cooperating parts oi: the machine being shown.

Figure 2 is a. front View of the device, shownin Figure 2, showing theledger-sheet in. position and the various columns on saidsheet. i

Figure 3 is a view similar to Figure 2, showing the carria e at the leftend of its travelv and the screen in effective relation thereto. 1 i i Aplaten 10 is fixed on a shaftvllfjournaled in the end walls 12 ,ot thetypewriter carriage frame. Said platen is rotatable by finger wheel 13outside said walls 12 and by a slide andpawl (not shown) operating theratchet-wheel 14'- fixed to move with the platen shaft. Type-bars 20 areadapted to be, swung upwardly and rearwardly by keys (not shown),against said platen, being guided in slots 21 in a segment 22 and bytype guide 2d fixed to said segment. The structure thus far described isfound in the Underwood standard typewriters and combined typewr-itingand computing machines;

A ledger-sheet 40 is shown in position around the platen. The sheetcomprises a column for old balances, columns for miscellaneous data,columns for debits and credits, a column for the new balance, and, inhis case, there is also a proof column. As pointed out above, thisledger-sheet is for use in a machine of the type described in said ltlart Patent, No. 1,270,411, having a computing register and a provingregister, which registers can be set to operate to gether or separately.

Let it be assumed that the balance carried over as shown in the balancecolumn is 95 375.515. he old balance column is brought to the printingpoint and 95675.55 is typed. therein and run into both the computing andproving registers. The cz'n'riau'e is then moved toward the left and theitem .120!) typed in the debits column and run into the computingregister, which now stands at 95687.55, but not into the provingregister which still reads 95675.55. There being no other items toenter, the carriage is then moved over to bring the balance column in.printing position, and the new balance, as shown by the computingregister, is typed therein and simultaneously subtracted out ol. thecomputing register, which now stands at zero. The star key associatedwith the computing register may now he depressed for checking purposes.

The carriage is again moved towards the left, bringing the proof columnto the printing point. The proving register con tains the old balance ascopied into the old balance column from the original balance column. Theoperator should now go back to the original balance 95675.55 in thebalance column, copying that figure in the proof column andsimultaneously subtracting it out of the proving register. If theoperator copied the above amount correctly into the old balance column,and hence into the proving register, upon recopying this ZUI'IOHDt andsubtracting it out of the proving register, the latter will stand. atzero and. the star key may be operated. It is essential that theoperator read the old balance from the balance column and not from theold balance column, tor, it a mistake were made in copying the oldbalance into the old balance column. the same mistake would. be enteredinto the proving register. It the operator types the incorrect amount ofthe old balance column. in the proof column, the proving register willstand at zero when that amount is subtracted out. even though the oldbalance was incorrectly copied. However, it the operator copies the oldbalance from the balance column, the discrepancy between this amount andthe incorrect amount in the old balance column and the proving registerwill. become apparent, for, upon. subtraction, the proving register willnot stand at zero and the key will not be capable of operation. It is,therefore. essential that the operator copy the old balance from thebalance col 1111111 for typing in the proof column and subtracting fromthe proving register, and not from the old balance column.

The means provided for covering up the amount in the old balance column,when the carriage is in position to type in the proof column, comprisesa lJl'ilCl-ZOll 31 fixed to one of the side members 30 of the machine.Said bracket is provided with a horizontal portion 32, provided with aslot through which pass screws 84- tlor "fastening the bracket to theside member. The slot enables the bracket to be adjusted laterally ofthe machine. The bracket 31 comprises also an elongatedupwardly-extending arm 85 with an end piece 36, painted. red and adaptedto extend above the printing line, as shown in Figure The end piece, orblind, 36 covers the item. in the old balance column when the carriageis in position. to print in the proof column. The operator is thencompelled to go to the balance column and copy the orig'nal. oldbalance.

Variations may be resorted to within the scope of the invention, andportions of the improren1ents may be used without others.

l-lmxing thus described my invention, I claim: l

1. In a combined typewriting and computing machine having a computingregister and a }.)?.'0Vi11, register, and con' prising a carriage havinga platen journaled therein and around which a ledgersheet is adapted. tobe ted, said ledgersheet having an old lmlance column adjacent the leftside edge thereot. a balance column near the right side edge, and aproot column adjacent the balance column. the amount in said balancecolumn at the beginning of a GOD.- putation being adapted to be copiedinto said old balance column and run into said con'iputing and provingregisters. the same amount beingadapted to be copied into said proofcolumn and subtracted out oi the proving register to ascertain. whetherthe amount in the old balance column was correctly copied at the b'nning ot the computation, a screen mounted. on said machine and.adapted to blind the amount in the old balance column. so that theamount typed into the proof column and subtracted from the provingregister will be copied from the original balance column to avoidcarrying over any mistake which might have been made in copying theamount into the old balance column.

2. In a combined typewriting and comput- 111g machine having a computingregister and a proving register, and comprising a carriage having aplaten journaled therein and around which a ledger-sheet is adapted tobe fed, said ledger-sheet having an old balance column adjacent the leftside edge thereof, a balance column near the right side edge, and aproot column adjacent the balance column, the amount in said balancecolumn at the beginning of a computation being adapted to be copied intosaid old balance column and run into said computing and provingregisters, the same amount being adapted to be copied into said proofcolumn and subtracted out of the proving register to ascertain whetherthe amount in the old balance column was correctly copied at thebeginning of the computation, a screen mountedon said machine andadapted to blindthe amount in the old balance column, so that the amounttyped into the proof column and subtracted from the proving registerwill be copiedfrom the original balance column to avoid carrying overany mistake which might have been made in copying the amount into theold balance column, said screen being adjustable laterally on saidmachine to bring it' into co operating relation with said old balancecolumn when the proof column is in osition to be typed.

3. n a combined typewriting and computing machine comprising a carriagehaving a platen journaled therein and around which a ledger-sheet isadapted to be fed, said ledger-sheet having an old balance columnadjacent the left side edge thereof, a .balance column near the rightside edge, and a proof column adjacent said balance column, the amountin said old balance column being adapted to be copied from said balancecolumn, the same amount being adapted to be copied into said proofcolumn, means mounted on said machine for blinding the amount in saidoldbalance column to necessitate copying said amount from said balancecolumn when it is desired to enter the amount in the proof column.

4:. In a combined typewritinga'nd computing machine comprising acarriage having a platen journaled therein and around which aledger-sheet is adapted to be fed, said ledgersheet havin an old balancecolumn. adjacent the let side edge thereof, a balance column near theright side edge, and a proof column adjacent said balance column, theamount in said old balance column being adapted to be copied from saidbalance column, the same amount being adapted to be copied into saidproof column, a screen mounted on said machine'for blinding the amountin said old balance.

column to necessitate copying "said amount from said balance column whenit is desired to enter the amount in the proof column.

5. In a combined typewriting and computing machine comprising a carriagehaving a platen journaled therein and around which a ledgersheetisadapted to be fed, said ledger-sheet having an old balance columnadjacent the left side edge thereof, a balance column near the rightsideedge, and a proof column adjacent said balance column, the amount insaid old balance column being adapted to be copied from said balancecolumn, the same amount being adapted to be copied into said proofcolumn, a screen mounted on said machine for blinding the amount in saidold balance column to necessitate copying said amount from-said balancecolumn when it is desired to enter the amount in the proof column, saidscreen being adjustable laterally on said machine to correspond to theposition of the old balance column when the proof column is in positionto be typed.

6. In a combined typewriting and computing machine comprising acarriagchaving a platen journaled therein and around which a ledge-sheetis adapted to be fed, said ledger-.sheethaving an old balance columnadjacent the left side edge thereof, a balance column near the rightside edge, and a proof column adjacent said balance column, the amountin said old balance column being adapted to be copied from said balancecolumn, the same amount being adapted to be copied into said proofcolumn, means on said machine for blinding the amount in said oldbalance column to necessitate copying said amountfrom said balancecolumn when it is desired to enter the amount in the proof column, saidmeans comprising a screen. mounted on said machine andadapted'to blindsaid old balance column whenthe proof column is in position to be typed.1

7.. In a combined typewriting and computing'machine comprising acarriage having a platen j ournaled therein, and around which sheets areadaptedto be fed, "said carriage being adapted to travel from right toleft, a screen mounted on said machine andextending toward the leftabove the printing line to cover matter typed on a sheet at the left endthereof and which it is desired should not be visible while typingmatter at the right end.

8. In a combined typewriting and computing machine comprisinga carriagehaving a platen journaled therein, and around which sheets areadapted'to be fed, said carriage being adapted to travel from right toleft, a screen mounted on said machine and extending toward the leftabove the, printing line to covermatter typed on asheet at the left endthereof and which it is desired should not be visible while typingmatter at the right end, said screen being adjustable laterally on saidmachine to extend variable distances toward the left.

- 9. In a combined typewriting and C0111? puting machine comprising acarriage having a platen journaled therein and around which sheets areadapted to be fed, said carriage being adapted to travel from right toleft, a bracket mounted on said machine having an arm extend ingoutwardly toward the left said arm terminatin in a screen portionextending upwardly above the printlng line to cover matter typed on asheet at the left end thereof and which it is desired should not bevisible while typing matter at the right end.

10. In a combined typewriting and computing machine comprising acarriage having a platen journaled therein, a device to insure properproving of the computation of items entered on a ledger-sheet on saidplaten, said ledger-sheet having an old balance column adjacent the leftside edge thereof, a balance column near the right side edge, and aproof column adjacent said balance column, the amount in said oldbalance column, in the line in which entries are being made, beingcopied from an amount in said balance column in a line previouslywritten, the same amount being copied into said proof column in the linein which entries are being made, said device comprising means mounted onsaid machine for blinding said amount in the old balance column tonecessitate copying said amount from said balance column when it isdesired to enter the amount in the proof column.

11. In a combined typewriting and com puting machine comprising acarriage having a platen journaled therein, a device to insure properproving of the computation of items entered on a ledger-sheet on saidplaten, said ledger-sheet having an old balance column adjacent the leftside edge thereof, a. balance column near the right side edge, and aproof column adjacent said balance column, the amount in said oldbalance column, in the line in which entries are being made, beingcopied from an amount in said balance column in a line previouslywritten, the same amount being copied into said proof column in the linein which entries are being made, said device comprising a screen on saidmachine for blinding the amount in said old balance column tonecessitate copying said amount from said balance column when it isdesired to enter the amount in the proof column.

12. In a combined typewriting and computing machine comprising acarriage having a platen journaled therein, a device to insure properproving of the computation of items entered on a-lcdgershcct on saidplatter, said ledgmT-ehect having an old balance" column ad acent theleft side edge thereof, a balance column near the right side edge, and aproof column adjacent said balance column, the amount in said oldbalance column, in the line in which entries are being made, beingcopied from an amount in said balance column in a line nteviouslywritten, the same amount being copied into said proof column in the linein which entries are being made, said device comprising a screen on saidi'nachinefor blinding the amount-insaid old balance column tonecessitate copying said amount from. said. balance column when it isdcsired to enter the amount in the proof column, said screen beingadjustable laterally on said machine to correspond to the position ofthe old balance column when the proof column is in position to be typed.

13. A device for use on a combined typewriting and computing machinehaving a computing rigster, a i'o\'.iiig' register and a carriage havinga platen journalml therein to insure proper proving of the computationof items entered on a lcdgcr-r-ilicet on said platen, said ledger-sheethaving an old balance column, a balance column. and a proof columnadjacent the balance column, the amoui'it in said balance column at thebeginning of a crnmmtation being copied into said old balance column andrun into said computing and proving registers, the same amount beingcopied into said proof column and subtracted out of the proving registerto ascertain whether the amount in the old balance column was correctlycopied at the beginniu g of the computation, said. device comprising ascreen fixed on said machine and adapted to blind the amount in the oldbalance column when the proof column is at the printing point, so thatthe amount typed in the proof column and substractcd from the provingregister will be copied from the original balance column to avoidcarrying over any mistake which might have been made in copying theamount into the old balance column.

WALTER J. HAUSMAN. Witnesses H. R. BROCI-I, JOHN L. KIQKHAM.

